remcos | c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec

Analysis

max time kernel
188s
max time network
203s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
24/11/2022, 05:10

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe
Size

595KB
MD5

414f4a3b05028be19e006ae2ba9182b6
SHA1

2a66efff8a0dfcf8d0ac247940b8f790c3c9d377
SHA256

c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec
SHA512

82491b4e7876aa3d4306f1fdde6838e93fa123e0b66df8e262275be3fc5b80565475651bcc39765240467b209ca099522afa602ec414ebd9ee5bcaa8dc8a9a44
SSDEEP

12288:Ongh/PsZ1DX/VDJ8rrvE4kynl6i6rJ49j9qkaxv:Ongh/PVU4kYqJK9qkC

Score

10^/10

remcos nov 24th evasion persistence rat trojan

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Nov 24th

gcrozona.duckdns.org:6062

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
Microsoft Intel Audios.exe
copy_folder
Audio Microsoft File
delete_file
false
hide_file
true
hide_keylog_file
true
install_flag
true
install_path
%WinDir%
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
Windows Display
keylog_path
%WinDir%
mouse_option
false
mutex
Windows Audio
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screens
screenshot_path
%AppData%
screenshot_time
1
startup_value
Window Security Check
take_screenshot_option
true
take_screenshot_time
5
take_screenshot_title
Username;password;proforma;invoice;notepad

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

UAC bypass 3 TTPs 2 IoCs

evasion trojan

Bypass User Account Control

T1088

Disabling Security Tools

T1089

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	reg.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	reg.exe

Executes dropped EXE 3 IoCs

pid	Process
2436	Microsoft Intel Audios.exe
1596	Microsoft Intel Audios.exe
4144	Microsoft Intel Audios.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Control Panel\International\Geo\Nation	c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Windows\CurrentVersion\Run\	c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Window Security Check = "\"C:\\Windows\\Audio Microsoft File\\Microsoft Intel Audios.exe\""	c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe
Key created	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Windows\CurrentVersion\Run\	Microsoft Intel Audios.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Window Security Check = "\"C:\\Windows\\Audio Microsoft File\\Microsoft Intel Audios.exe\""	Microsoft Intel Audios.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3028 set thread context of 4672	3028	c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe	90
PID 2436 set thread context of 4144	2436	Microsoft Intel Audios.exe	101

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\Audio Microsoft File\Microsoft Intel Audios.exe	c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe
File opened for modification	C:\Windows\Audio Microsoft File\Microsoft Intel Audios.exe	c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe
File opened for modification	C:\Windows\Audio Microsoft File	c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry key 1 TTPs 2 IoCs

Modify Registry

T1112

pid	Process
3964	reg.exe
4288	reg.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
892	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3028	c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe
3028	c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe
2436	Microsoft Intel Audios.exe
2436	Microsoft Intel Audios.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3028	c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe
Token: SeDebugPrivilege	2436	Microsoft Intel Audios.exe

Suspicious use of WriteProcessMemory 45 IoCs

description	pid	Process	procid_target
PID 3028 wrote to memory of 3236	3028	c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe	89
PID 3028 wrote to memory of 3236	3028	c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe	89
PID 3028 wrote to memory of 3236	3028	c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe	89
PID 3028 wrote to memory of 4672	3028	c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe	90
PID 3028 wrote to memory of 4672	3028	c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe	90
PID 3028 wrote to memory of 4672	3028	c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe	90
PID 3028 wrote to memory of 4672	3028	c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe	90
PID 3028 wrote to memory of 4672	3028	c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe	90
PID 3028 wrote to memory of 4672	3028	c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe	90
PID 3028 wrote to memory of 4672	3028	c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe	90
PID 3028 wrote to memory of 4672	3028	c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe	90
PID 3028 wrote to memory of 4672	3028	c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe	90
PID 4672 wrote to memory of 2096	4672	c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe	91
PID 4672 wrote to memory of 2096	4672	c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe	91
PID 4672 wrote to memory of 2096	4672	c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe	91
PID 2096 wrote to memory of 4288	2096	cmd.exe	93
PID 2096 wrote to memory of 4288	2096	cmd.exe	93
PID 2096 wrote to memory of 4288	2096	cmd.exe	93
PID 4672 wrote to memory of 4364	4672	c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe	94
PID 4672 wrote to memory of 4364	4672	c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe	94
PID 4672 wrote to memory of 4364	4672	c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe	94
PID 4364 wrote to memory of 892	4364	cmd.exe	96
PID 4364 wrote to memory of 892	4364	cmd.exe	96
PID 4364 wrote to memory of 892	4364	cmd.exe	96
PID 4364 wrote to memory of 2436	4364	cmd.exe	97
PID 4364 wrote to memory of 2436	4364	cmd.exe	97
PID 4364 wrote to memory of 2436	4364	cmd.exe	97
PID 2436 wrote to memory of 1596	2436	Microsoft Intel Audios.exe	100
PID 2436 wrote to memory of 1596	2436	Microsoft Intel Audios.exe	100
PID 2436 wrote to memory of 1596	2436	Microsoft Intel Audios.exe	100
PID 2436 wrote to memory of 4144	2436	Microsoft Intel Audios.exe	101
PID 2436 wrote to memory of 4144	2436	Microsoft Intel Audios.exe	101
PID 2436 wrote to memory of 4144	2436	Microsoft Intel Audios.exe	101
PID 2436 wrote to memory of 4144	2436	Microsoft Intel Audios.exe	101
PID 2436 wrote to memory of 4144	2436	Microsoft Intel Audios.exe	101
PID 2436 wrote to memory of 4144	2436	Microsoft Intel Audios.exe	101
PID 2436 wrote to memory of 4144	2436	Microsoft Intel Audios.exe	101
PID 2436 wrote to memory of 4144	2436	Microsoft Intel Audios.exe	101
PID 2436 wrote to memory of 4144	2436	Microsoft Intel Audios.exe	101
PID 4144 wrote to memory of 4396	4144	Microsoft Intel Audios.exe	102
PID 4144 wrote to memory of 4396	4144	Microsoft Intel Audios.exe	102
PID 4144 wrote to memory of 4396	4144	Microsoft Intel Audios.exe	102
PID 4396 wrote to memory of 3964	4396	cmd.exe	104
PID 4396 wrote to memory of 3964	4396	cmd.exe	104
PID 4396 wrote to memory of 3964	4396	cmd.exe	104

C:\Users\Admin\AppData\Local\Temp\c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe
"C:\Users\Admin\AppData\Local\Temp\c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3028
- C:\Users\Admin\AppData\Local\Temp\c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe
  "C:\Users\Admin\AppData\Local\Temp\c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe"
  2⤵
  PID:3236
- C:\Users\Admin\AppData\Local\Temp\c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe
  "C:\Users\Admin\AppData\Local\Temp\c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:4672
- - C:\Windows\SysWOW64\cmd.exe
    /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2096
  - - C:\Windows\SysWOW64\reg.exe
      C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
      4⤵
      UAC bypass
      Modifies registry key
      PID:4288
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\install.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4364
  - - C:\Windows\SysWOW64\PING.EXE
      PING 127.0.0.1 -n 2
      4⤵
      Runs ping.exe
      PID:892
  - - C:\Windows\Audio Microsoft File\Microsoft Intel Audios.exe
      "C:\Windows\Audio Microsoft File\Microsoft Intel Audios.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2436
    - - C:\Windows\Audio Microsoft File\Microsoft Intel Audios.exe
        
        "C:\Windows\Audio Microsoft File\Microsoft Intel Audios.exe"
        5⤵
        Executes dropped EXE
        
        PID:1596
    - - C:\Windows\Audio Microsoft File\Microsoft Intel Audios.exe
        
        "C:\Windows\Audio Microsoft File\Microsoft Intel Audios.exe"
        5⤵
        Executes dropped EXE
        Adds Run key to start application
        Suspicious use of WriteProcessMemory
        
        PID:4144
      - C:\Windows\SysWOW64\cmd.exe
        
        /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
        6⤵
        Suspicious use of WriteProcessMemory
        
        PID:4396
        
        C:\Windows\SysWOW64\reg.exe
        
        C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
        7⤵
        UAC bypass
        Modifies registry key
        
        PID:3964

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Bypass User Account Control

T1088

Defense Evasion

Bypass User Account Control

T1088

Disabling Security Tools

T1089

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\install.bat

Filesize
109B

MD5
8ddcdd0ab01b0740982e7b78b1591015

SHA1
acbb9c4bb32822a164f200f8b77eda0ce7bd758d

SHA256
7c1abbf1a20f581d2db76d769cc14cf753a412cf92e383a36ffbf0c962eaf678

SHA512
ef43e3cb89c800529530183d4315782a864281ef8a0e6443a54ccc4f1837fcbfe43027b399bb43ea114fab70416d49b3cb2539cf8bf658b4b447c4e8597959dc

Download Submit
C:\Windows\Audio Microsoft File\Microsoft Intel Audios.exe

Filesize
595KB

MD5
414f4a3b05028be19e006ae2ba9182b6

SHA1
2a66efff8a0dfcf8d0ac247940b8f790c3c9d377

SHA256
c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec

SHA512
82491b4e7876aa3d4306f1fdde6838e93fa123e0b66df8e262275be3fc5b80565475651bcc39765240467b209ca099522afa602ec414ebd9ee5bcaa8dc8a9a44

Download Submit
C:\Windows\Audio Microsoft File\Microsoft Intel Audios.exe

Filesize
595KB

MD5
414f4a3b05028be19e006ae2ba9182b6

SHA1
2a66efff8a0dfcf8d0ac247940b8f790c3c9d377

SHA256
c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec

SHA512
82491b4e7876aa3d4306f1fdde6838e93fa123e0b66df8e262275be3fc5b80565475651bcc39765240467b209ca099522afa602ec414ebd9ee5bcaa8dc8a9a44

Download Submit
C:\Windows\Audio Microsoft File\Microsoft Intel Audios.exe

Filesize
595KB

MD5
414f4a3b05028be19e006ae2ba9182b6

SHA1
2a66efff8a0dfcf8d0ac247940b8f790c3c9d377

SHA256
c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec

SHA512
82491b4e7876aa3d4306f1fdde6838e93fa123e0b66df8e262275be3fc5b80565475651bcc39765240467b209ca099522afa602ec414ebd9ee5bcaa8dc8a9a44

Download Submit
C:\Windows\Audio Microsoft File\Microsoft Intel Audios.exe

Filesize
595KB

MD5
414f4a3b05028be19e006ae2ba9182b6

SHA1
2a66efff8a0dfcf8d0ac247940b8f790c3c9d377

SHA256
c09cb187ead292e38f9552449115d0e8ad5211f65cd6cc2ad2a2e8249d7481ec

SHA512
82491b4e7876aa3d4306f1fdde6838e93fa123e0b66df8e262275be3fc5b80565475651bcc39765240467b209ca099522afa602ec414ebd9ee5bcaa8dc8a9a44

Download Submit
memory/3028-136-0x0000000000B90000-0x0000000000C2C000-memory.dmp

Filesize
624KB

Download
memory/3028-135-0x0000000004C90000-0x0000000004C9A000-memory.dmp

Filesize
40KB

Download
memory/3028-134-0x0000000004D10000-0x0000000004DA2000-memory.dmp

Filesize
584KB

Download
memory/3028-132-0x0000000000250000-0x00000000002EC000-memory.dmp

Filesize
624KB

Download
memory/3028-133-0x0000000005220000-0x00000000057C4000-memory.dmp

Filesize
5.6MB

Download
memory/4144-158-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4144-161-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4672-146-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4672-144-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4672-141-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4672-139-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download